*,
*:before,
*:after {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0
}

body {
    background: #1f1f1f;
    font-family: open sans, Helvetica, Arial, sans-serif
}

.cont {
    position: relative;
    overflow: hidden;
    height: 100vh;
    padding: 80px 70px
}

.cont__inner {
    position: relative;
    height: 100%
}

.cont__inner:hover .el__bg:after {
    opacity: 1
}

.el {
    position: absolute;
    left: 0;
    top: 0;
    width: 19.2%;
    height: 100%;
    background: #252525;
    -webkit-transition: width .7s, opacity .6s .7s, z-index 0s 1.3s, -webkit-transform .6s .7s;
    transition: width .7s, opacity .6s .7s, z-index 0s 1.3s, -webkit-transform .6s .7s;
    transition: transform .6s .7s, width .7s, opacity .6s .7s, z-index 0s 1.3s;
    transition: transform .6s .7s, width .7s, opacity .6s .7s, z-index 0s 1.3s, -webkit-transform .6s .7s;
    will-change: transform, width, opacity
}

.el:not(.s--active) {
    cursor: pointer
}

.el__overflow {
    overflow: hidden;
    position: relative;
    height: 100%
}

.el__inner {
    overflow: hidden;
    position: relative;
    height: 100%;
    -webkit-transition: -webkit-transform 1s;
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s
}

.cont.s--inactive .el__inner {
    -webkit-transform: translate3d(0, 100%, 0);
    transform: translate3d(0, 100%, 0)
}

.el__bg {
    position: relative;
    width: calc(100vw - 140px);
    height: 100%;
    -webkit-transition: -webkit-transform .6s .7s;
    transition: -webkit-transform .6s .7s;
    transition: transform .6s .7s;
    transition: transform .6s .7s, -webkit-transform .6s .7s;
    will-change: transform
}

.el__bg:before {
    content: "";
    position: absolute;
    left: 0;
    top: -5%;
    width: 100%;
    height: 110%;
    background-size: cover;
    background-position: center center;
    -webkit-transition: -webkit-transform 1s;
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s;
    -webkit-transform: translate3d(0, 0, 0) scale(1);
    transform: translate3d(0, 0, 0) scale(1)
}

.cont.s--inactive .el__bg:before {
    -webkit-transform: translate3d(0, -100%, 0) scale(1.2);
    transform: translate3d(0, -100%, 0) scale(1.2)
}

.el.s--active .el__bg:before {
    -webkit-transition: -webkit-transform .8s;
    transition: -webkit-transform .8s;
    transition: transform .8s;
    transition: transform .8s, -webkit-transform .8s
}

.el__bg:after {
    content: "";
    z-index: 1;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, .3);
    opacity: 0;
    -webkit-transition: opacity .5s;
    transition: opacity .5s
}

.cont.s--el-active .el__bg:after {
    -webkit-transition: opacity .5s 1.4s;
    transition: opacity .5s 1.4s;
    opacity: 1!important
}

.el__preview-cont {
    z-index: 2;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    -webkit-transition: all .3s 1.2s;
    transition: all .3s 1.2s
}

.cont.s--inactive .el__preview-cont {
    opacity: 0;
    -webkit-transform: translateY(10px);
    transform: translateY(10px)
}

.cont.s--el-active .el__preview-cont {
    opacity: 0;
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
    -webkit-transition: all .5s;
    transition: all .5s
}

.el__heading {
    color: #fff;
    text-transform: uppercase;
    font-size: 18px
}

.el__content {
    z-index: -1;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    padding: 30px;
    opacity: 0;
    pointer-events: none;
    -webkit-transition: all .1s;
    transition: all .1s
}

.el.s--active .el__content {
    z-index: 2;
    opacity: 1;
    pointer-events: auto;
    -webkit-transition: all .5s 1.4s;
    transition: all .5s 1.4s
}

.el__text {
    text-transform: uppercase;
    font-size: 40px;
    color: #fff
}

.el__close-btn {
    z-index: -1;
    position: absolute;
    right: 10px;
    top: 10px;
    width: 60px;
    height: 60px;
    opacity: 0;
    pointer-events: none;
    -webkit-transition: all 0s .45s;
    transition: all 0s .45s;
    cursor: pointer
}

.el.s--active .el__close-btn {
    z-index: 5;
    opacity: 1;
    pointer-events: auto;
    -webkit-transition: all 0s 1.4s;
    transition: all 0s 1.4s
}

.el__close-btn:before,
.el__close-btn:after {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
    height: 8px;
    margin-top: -4px;
    background: #fff;
    opacity: 0;
    -webkit-transition: opacity 0s;
    transition: opacity 0s
}

.el.s--active .el__close-btn:before,
.el.s--active .el__close-btn:after {
    opacity: 1
}

.el__close-btn:before {
    -webkit-transform: rotate(45deg) translateX(100%);
    transform: rotate(45deg) translateX(100%)
}

.el.s--active .el__close-btn:before {
    -webkit-transition: all .3s 1.4s cubic-bezier(.72, .09, .32, 1.57);
    transition: all .3s 1.4s cubic-bezier(.72, .09, .32, 1.57);
    -webkit-transform: rotate(45deg) translateX(0);
    transform: rotate(45deg) translateX(0)
}

.el__close-btn:after {
    -webkit-transform: rotate(-45deg) translateX(100%);
    transform: rotate(-45deg) translateX(100%)
}

.el.s--active .el__close-btn:after {
    -webkit-transition: all .3s 1.55s cubic-bezier(.72, .09, .32, 1.57);
    transition: all .3s 1.55s cubic-bezier(.72, .09, .32, 1.57);
    -webkit-transform: rotate(-45deg) translateX(0);
    transform: rotate(-45deg) translateX(0)
}

.el__index {
    overflow: hidden;
    position: absolute;
    left: 0;
    bottom: -80px;
    width: 100%;
    height: 100%;
    min-height: 250px;
    text-align: center;
    font-size: 20vw;
    line-height: .85;
    font-weight: 700;
    -webkit-transition: opacity .3s 1.4s, -webkit-transform .5s;
    transition: opacity .3s 1.4s, -webkit-transform .5s;
    transition: transform .5s, opacity .3s 1.4s;
    transition: transform .5s, opacity .3s 1.4s, -webkit-transform .5s;
    -webkit-transform: translate3d(0, 1vw, 0);
    transform: translate3d(0, 1vw, 0)
}

.el:hover .el__index {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0)
}

.cont.s--el-active .el__index {
    -webkit-transition: opacity .3s, -webkit-transform .5s;
    transition: opacity .3s, -webkit-transform .5s;
    transition: transform .5s, opacity .3s;
    transition: transform .5s, opacity .3s, -webkit-transform .5s;
    opacity: 0
}

.el__index-back,
.el__index-front {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%
}

.el__index-back {
    color: #2f3840;
    opacity: 0;
    -webkit-transition: opacity .25s .25s;
    transition: opacity .25s .25s
}

.el:hover .el__index-back {
    -webkit-transition: opacity .25s;
    transition: opacity .25s;
    opacity: 1
}

.el__index-overlay {
    overflow: hidden;
    position: relative;
    -webkit-transform: translate3d(0, 100%, 0);
    transform: translate3d(0, 100%, 0);
    -webkit-transition: -webkit-transform .5s .1s;
    transition: -webkit-transform .5s .1s;
    transition: transform .5s .1s;
    transition: transform .5s .1s, -webkit-transform .5s .1s;
    color: transparent
}

.el__index-overlay:before {
    content: attr(data-index);
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    color: #fff;
    -webkit-transform: translate3d(0, -100%, 0);
    transform: translate3d(0, -100%, 0);
    -webkit-transition: -webkit-transform .5s .1s;
    transition: -webkit-transform .5s .1s;
    transition: transform .5s .1s;
    transition: transform .5s .1s, -webkit-transform .5s .1s
}

.el:hover .el__index-overlay {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0)
}

.el:hover .el__index-overlay:before {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0)
}

.el:nth-child(1) {
    -webkit-transform: translate3d(0%, 0, 0);
    transform: translate3d(0%, 0, 0);
    -webkit-transform-origin: 50% 50%;
    transform-origin: 50% 50%
}

.cont.s--el-active .el:nth-child(1):not(.s--active) {
    -webkit-transform: scale(.5) translate3d(0%, 0, 0);
    transform: scale(.5) translate3d(0%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity .95s, -webkit-transform .95s;
    transition: opacity .95s, -webkit-transform .95s;
    transition: transform .95s, opacity .95s;
    transition: transform .95s, opacity .95s, -webkit-transform .95s
}

.el:nth-child(1) .el__inner {
    -webkit-transition-delay: 0s;
    transition-delay: 0s
}

.el:nth-child(1) .el__bg {
    -webkit-transform: translate3d(0%, 0, 0);
    transform: translate3d(0%, 0, 0)
}

.el:nth-child(1) .el__bg:before {
    -webkit-transition-delay: 0s;
    transition-delay: 0s;
    background-image: url(a3.png)
}

.el:nth-child(2) {
    -webkit-transform: translate3d(105.2083333333%, 0, 0);
    transform: translate3d(105.2083333333%, 0, 0);
    -webkit-transform-origin: 155.2083333333% 50%;
    transform-origin: 155.2083333333% 50%
}

.cont.s--el-active .el:nth-child(2):not(.s--active) {
    -webkit-transform: scale(.5) translate3d(105.2083333333%, 0, 0);
    transform: scale(.5) translate3d(105.2083333333%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity .95s, -webkit-transform .95s;
    transition: opacity .95s, -webkit-transform .95s;
    transition: transform .95s, opacity .95s;
    transition: transform .95s, opacity .95s, -webkit-transform .95s
}

.el:nth-child(2) .el__inner {
    -webkit-transition-delay: .1s;
    transition-delay: .1s
}

.el:nth-child(2) .el__bg {
    -webkit-transform: translate3d(-19.2%, 0, 0);
    transform: translate3d(-19.2%, 0, 0)
}

.el:nth-child(2) .el__bg:before {
    -webkit-transition-delay: .1s;
    transition-delay: .1s;
    background-image: url(a4.png)
}

.el:nth-child(3) {
    -webkit-transform: translate3d(210.4166666667%, 0, 0);
    transform: translate3d(210.4166666667%, 0, 0);
    -webkit-transform-origin: 260.4166666667% 50%;
    transform-origin: 260.4166666667% 50%
}

.cont.s--el-active .el:nth-child(3):not(.s--active) {
    -webkit-transform: scale(.5) translate3d(210.4166666667%, 0, 0);
    transform: scale(.5) translate3d(210.4166666667%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity .95s, -webkit-transform .95s;
    transition: opacity .95s, -webkit-transform .95s;
    transition: transform .95s, opacity .95s;
    transition: transform .95s, opacity .95s, -webkit-transform .95s
}

.el:nth-child(3) .el__inner {
    -webkit-transition-delay: .2s;
    transition-delay: .2s
}

.el:nth-child(3) .el__bg {
    -webkit-transform: translate3d(-38.4%, 0, 0);
    transform: translate3d(-38.4%, 0, 0)
}

.el:nth-child(3) .el__bg:before {
    -webkit-transition-delay: .2s;
    transition-delay: .2s;
    background-image: url(a5.png)
}

.el:nth-child(4) {
    -webkit-transform: translate3d(315.625%, 0, 0);
    transform: translate3d(315.625%, 0, 0);
    -webkit-transform-origin: 365.625% 50%;
    transform-origin: 365.625% 50%
}

.cont.s--el-active .el:nth-child(4):not(.s--active) {
    -webkit-transform: scale(.5) translate3d(315.625%, 0, 0);
    transform: scale(.5) translate3d(315.625%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity .95s, -webkit-transform .95s;
    transition: opacity .95s, -webkit-transform .95s;
    transition: transform .95s, opacity .95s;
    transition: transform .95s, opacity .95s, -webkit-transform .95s
}

.el:nth-child(4) .el__inner {
    -webkit-transition-delay: .3s;
    transition-delay: .3s
}

.el:nth-child(4) .el__bg {
    -webkit-transform: translate3d(-57.6%, 0, 0);
    transform: translate3d(-57.6%, 0, 0)
}

.el:nth-child(4) .el__bg:before {
    -webkit-transition-delay: .3s;
    transition-delay: .3s;
    background-image: url(a1.png)
}

.el:nth-child(5) {
    -webkit-transform: translate3d(420.8333333333%, 0, 0);
    transform: translate3d(420.8333333333%, 0, 0);
    -webkit-transform-origin: 470.8333333333% 50%;
    transform-origin: 470.8333333333% 50%
}

.cont.s--el-active .el:nth-child(5):not(.s--active) {
    -webkit-transform: scale(.5) translate3d(420.8333333333%, 0, 0);
    transform: scale(.5) translate3d(420.8333333333%, 0, 0);
    opacity: 0;
    -webkit-transition: opacity .95s, -webkit-transform .95s;
    transition: opacity .95s, -webkit-transform .95s;
    transition: transform .95s, opacity .95s;
    transition: transform .95s, opacity .95s, -webkit-transform .95s
}

.el:nth-child(5) .el__inner {
    -webkit-transition-delay: .4s;
    transition-delay: .4s
}

.el:nth-child(5) .el__bg {
    -webkit-transform: translate3d(-76.8%, 0, 0);
    transform: translate3d(-76.8%, 0, 0)
}

.el:nth-child(5) .el__bg:before {
    -webkit-transition-delay: .4s;
    transition-delay: .4s;
    background-image: url(a2.png)
}

.el:hover .el__bg:after {
    opacity: 0
}

.el.s--active {
    z-index: 1;
    width: 100%;
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
    -webkit-transition: width .7s .7s, z-index 0s, -webkit-transform .6s;
    transition: width .7s .7s, z-index 0s, -webkit-transform .6s;
    transition: transform .6s, width .7s .7s, z-index 0s;
    transition: transform .6s, width .7s .7s, z-index 0s, -webkit-transform .6s
}

.el.s--active .el__bg {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
    -webkit-transition: -webkit-transform .6s;
    transition: -webkit-transform .6s;
    transition: transform .6s;
    transition: transform .6s, -webkit-transform .6s
}

.el.s--active .el__bg:before {
    -webkit-transition-delay: .6s;
    transition-delay: .6s;
    -webkit-transform: scale(1.1);
    transform: scale(1.1)
}

.icon-link {
    position: absolute;
    left: 5px;
    bottom: 5px;
    width: 32px
}

.icon-link img {
    width: 100%;
    vertical-align: top
}

.icon-link--twitter {
    left: auto;
    right: 5px
}